Authorities said a black sedan was traveling westbound on Highway 14. The driver, Katie Binning, 22, of Madison, slowed down to make a left turn into the parking lot of the high school, when she was rear-ended by a tractor-trailer operated by Gary J. Lammert, 48, of Moffit, N. D.

The impact pushed the Saturn into oncoming traffic, where it collided with a full-sized van traveling eastbound, authorities said.

Binning, who graduated from Abbotsford High School and the University of Wisconsin-Platteville, was pronounced dead at the scene, authorities said.

Binning was a student athlete at UW-Platteville. She was a member of the cross country team, university officials said. They said she was student teaching at Wisconsin Heights High School this spring.

The driver of the van, Richard M. Butler, 63, of Wonewoc, was taken by Mazomanie EMS to Sauk Prairie Hospital with non-life threatening injuries.